Simon Harris, speaking to his party on Saturday, affirmed Ireland's readiness to recognize a Palestinian state. He condemned Hamas but said the Irish were "repulsed" by Israel's actions in Gaza.
The 37-year-old former health and higher education minister was elected unopposed as the new leader of Fine Gael last month, just days after Leo Varadkar's shock exit.
The nation's foreign minister did not say what form the intervention would take or outline any argument or proposal Ireland plans to put forward.
The Gardai announced they would implement a review of the security situation at the embassy as a result of the increasing number of threats.
Since 1988, 139 out of 193 United Nations member states have recognized Palestinian statehood.
Varadkar said it was the right time for him to step down and that there was no "real reason" behind his decision. "I have nothing else lined up. I have nothing in mind."
Irish people who back the Palestinians often ground their sympathies in the perception that both peoples were, or are, colonized — the Irish by the United Kingdom, and the Palestinians by Israel.
The American Jewish Committee said Sunday that the banner was outrageous and antisemitic, and thanked officials for removing the display.
Ryanair now offers 'Occupied Palestinian Territory' as an option in the personal details section of their website.
MIDDLE ISRAEL: Fed by self-importance, ignorance, and malice, Ireland’s abuse of Israel has gone from tragedy to farce.